Mobile Development · head to head
Capacitor vs Kotlin Multiplatform
Capacitor
Mobile Development
MIT-licensed native runtime bridging web apps to iOS, Android and native APIs
- From
- Free
- Rated
- -
Kotlin Multiplatform
Mobile Development
JetBrains-funded technology for sharing Kotlin business logic across iOS, Android, web, desktop and server
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Capacitor uI still renders in a system WebView, so complex animation and heavy graphics work require more manual tuning than a natively-rendered framework provides by default.; Kotlin Multiplatform it shares logic, not UI, by default, so a team expecting a Flutter-style single UI codebase has to also adopt Compose Multiplatform, which is newer and less proven on iOS than on Android.
- They diverge on capability: Capacitor covers Native project generation, Kotlin Multiplatform covers Shared Kotlin logic.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Capacitor and Kotlin Multiplatform actually diverge.
| Attribute | Capacitor | Kotlin Multiplatform |
|---|---|---|
| Platforms | Web, iOS, Android | iOS, Android, Windows, macOS, Linux, Web |
Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Mobile Development).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Capacitor
- Native project generation
- Plugin bridge
- Custom native plugins
- Live Reload
- Framework agnostic
- Capacitor Assets and Configure CLIs
Only in Kotlin Multiplatform
- Shared Kotlin logic
- Native UI retained
- Compose Multiplatform (optional)
- IDE tooling
- Gradle-based builds
- Incremental adoption
What people use each for
The jobs each tool is most often brought in to do.
Capacitor
- A team wrapping an existing responsive web app to publish it to the App Store and Play Storenot Kotlin Multiplatform
- A product using React or Vue that wants native device APIs without adopting a full mobile frameworknot Kotlin Multiplatform
- A developer who wants to drop into native Swift or Kotlin code for the parts a plugin does not covernot Kotlin Multiplatform
- A company migrating off Apache Cordova, since Capacitor was designed as a modern, actively maintained successornot Kotlin Multiplatform
Kotlin Multiplatform
- A company with existing separate native iOS and Android codebases wanting to stop duplicating business logic and networking codenot Capacitor
- A team that wants shared logic but is not willing to compromise on fully native UI per platformnot Capacitor
- An organisation already using Kotlin on the backend that wants to reuse the same models and validation on mobile clientsnot Capacitor
- A team evaluating Compose Multiplatform for UI sharing but wanting the option to fall back to native UI per screennot Capacitor
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Capacitor
- UI still renders in a system WebView, so complex animation and heavy graphics work require more manual tuning than a natively-rendered framework provides by default.
- Every native capability not covered by an official or community plugin means writing and maintaining native Swift and Kotlin code, which erodes the single-codebase promise for device-heavy apps.
- It is maintained by the same team as Ionic, and while it does not require the Ionic UI library, its release cadence and roadmap priorities are set by a company now owned by OutSystems.
- Cordova plugins are not automatically compatible and often need adaptation, so migrating a legacy Cordova app is a real porting project, not a drop-in swap.
- App store review teams scrutinise WebView-wrapped apps more closely for "just a website" rejections, so thin wrapper apps carry more approval risk than natively-compiled alternatives.
Kotlin Multiplatform
- It shares logic, not UI, by default, so a team expecting a Flutter-style single UI codebase has to also adopt Compose Multiplatform, which is newer and less proven on iOS than on Android.
- iOS interop relies on Kotlin/Native compiling to a framework consumed from Swift, and debugging across that boundary is more friction than debugging pure Swift or pure Kotlin.
- Because logic-sharing is the whole premise, teams still need genuine iOS and Android UI expertise on staff; it does not reduce the native skills bar the way a full cross-platform UI framework aims to.
- Build times and tooling maturity for multiplatform Gradle projects lag behind single-platform Kotlin or Swift projects, and multiplatform-specific build errors are less well documented.
- JetBrains funds it as part of the broader Kotlin investment, so its roadmap priority competes internally with IntelliJ, Android Studio and other JetBrains commitments rather than having dedicated headcount the way Flutter has at Google.
Pricing, plan by plan
Capacitor
Free- CapacitorFree
- MIT licensed, unlimited apps
- Core plugin set included
- Community support via GitHub and Discord
Kotlin Multiplatform
Free- Kotlin MultiplatformFree
- Apache 2.0 licensed, unlimited apps
- IDE tooling in the free Android Studio and free-tier IntelliJ IDEA Community
- No paid Kotlin Multiplatform edition exists
Which should you pick?
Choose Capacitor if
- You need native project generation.
- You want to start without paying.
- You work on Web, iOS, Android.
- You also want plugin bridge.
Choose Kotlin Multiplatform if
- You need shared kotlin logic.
- You want to start without paying.
- You work on iOS, Android, Windows, macOS, Linux, Web.
- You also want native ui retained.
Questions people ask
- Is Capacitor or Kotlin Multiplatform better?
- Neither clearly leads. Capacitor starts at Free and Kotlin Multiplatform at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Capacitor or Kotlin Multiplatform?
- Capacitor starts at Free and Kotlin Multiplatform at Free.
- Does Capacitor or Kotlin Multiplatform run on more platforms?
- Capacitor runs on Web, iOS, Android. Kotlin Multiplatform runs on iOS, Android, Windows, macOS, Linux, Web.
- Can I use Capacitor for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Capacitor best used for?
- Capacitor is most often used for a team wrapping an existing responsive web app to publish it to the app store and play store, a product using react or vue that wants native device apis without adopting a full mobile framework, a developer who wants to drop into native swift or kotlin code for the parts a plugin does not cover, a company migrating off apache cordova, since capacitor was designed as a modern, actively maintained successor. Of those, a team wrapping an existing responsive web app to publish it to the app store and play store and a product using react or vue that wants native device apis without adopting a full mobile framework are not what Kotlin Multiplatform is typically brought in for.
- What can Capacitor do that Kotlin Multiplatform cannot?
- Capacitor covers Native project generation, Plugin bridge, Custom native plugins, Live Reload. Kotlin Multiplatform covers Shared Kotlin logic, Native UI retained, Compose Multiplatform (optional), IDE tooling.
Answered from the vendors’ own pages
Capacitor: Do I need Ionic components to use Capacitor?
No. Capacitor is the native runtime and plugin bridge; the Ionic UI component library is a separate, optional layer.
Kotlin Multiplatform: Does Kotlin Multiplatform replace my native UI code?
Not by default. It shares business logic and data layers; UI stays native per platform unless you separately adopt Compose Multiplatform.
Capacitor: Is Capacitor free for commercial apps?
Yes, it is MIT licensed with no fee for commercial use, and there is no paid tier of Capacitor itself.
Kotlin Multiplatform: Is there a paid version?
No. It is Apache 2.0 licensed and free, funded by JetBrains as part of the Kotlin project.
Capacitor: Is it a replacement for Cordova?
Functionally yes for most teams, though existing Cordova plugins need adaptation rather than working unmodified.
Kotlin Multiplatform: Do I need Compose Multiplatform to use it?
No, they are separate. You can share only logic and keep fully native UI on each platform indefinitely.
Related pages
More on Kotlin Multiplatform
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